El registro geológico antropoceno en el Abra de Bilbaoevidencias de su historia natural y humana

  1. A. Cearreta 1
  2. M.J. Irabien 1
  3. J. Gómez Arozamena 2
  4. I. Kortabitarte 1
  5. Alba González-Lanchas 1
  1. 1 Universidad del País Vasco/Euskal Herriko Unibertsitatea
    info

    Universidad del País Vasco/Euskal Herriko Unibertsitatea

    Lejona, España

    ROR https://ror.org/000xsnr85

  2. 2 Universidad de Cantabria
    info

    Universidad de Cantabria

    Santander, España

    ROR https://ror.org/046ffzj20

Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2017

Issue: 61

Pages: 11-14

Type: Article

DIALNET GOOGLE SCHOLAR lock_openArias Montano editor

More publications in: Geogaceta

Abstract

The recent sedimentary record in the subtidal area of the inner Abra of Bilbao has been studied using 2 cores of 64 and 56 cm in length. General accumulation of materials shows mainly a muddy character with a moderate abundance of benthic foraminifera and a decrease in metal concentrations through time as a consequence of the local industrial history. However, an anomalous sandier, intermediate section has been identified and it is considered as resedimentation of preindustrial subtidal deposits (lower and variable concentrations of metals, absence of radioisotopes, and very abundant marine microfauna) as a result of the 1983 riverine flooding. This alerts on the possibility of remobilization of recent sediments (polluted and/or clean) in this environment due to natural and anthropogenic processes.

Data source: Dialnet